| Alastair John Keatinge | Director | 7 Oct 1991 | 22 Oct 1991 | British | 69 years |
| Allan Gilbert King | Director | 1 Mar 1992 | 30 Sept 1993 | British | 91 years |
| Balfour + Manson | Corporate Secretary | 7 Oct 1991 | 1 Mar 1992 | - | - |
| Christophe Andre Bernard Chapron | Director | 19 Feb 2007 | 1 Feb 2016 | French | 62 years |
| Christopher Michael Green | Director | 30 Sept 1993 | 19 May 1999 | British | 72 years |
| David Courtenay Palmer-jones | Director | 1 Oct 2008 | 1 Jan 2020 | British | 63 years |
| David Fair Cunningham | Secretary | 1 Mar 1992 | 30 Sept 1993 | British | - |
| David John Watson | Secretary | 30 Sept 1993 | 19 May 1999 | British | - |
| Elizabeth Jayne Clare Cooper | Secretary | 1 Jul 2001 | 31 Jul 2003 | British | - |
| Florent Thierry Antoine Duval | Director | 1 Feb 2016 | 31 Oct 2021 | French | 50 years |
| George Mcgregor | Director | 22 Oct 1991 | 30 Sept 1993 | British | 83 years |
| Ian Anthony Sexton | Director | 2 Mar 2001 | 19 Feb 2007 | British | 70 years |
| Ian Frederick Goodfellow | Director | 17 Oct 1994 | 19 May 1999 | British | 72 years |
| Ian Frederick Goodfellow | Director | 19 May 1999 | 31 May 2003 | British | 72 years |
| James Edward Newton | Director | 12 May 1994 | 26 Jul 1994 | British | 75 years |
| Joan Knight | Secretary | 31 Jul 2003 | 6 May 2025 | British | - |
| John Maxwell Hodge | Director | 7 Oct 1991 | 22 Oct 1991 | British | 76 years |
| John Merchant Mcgregor | Director | 22 Oct 1991 | 1 Mar 1992 | British | 81 years |
| Paul Taylor | Director | 15 Dec 1995 | 19 May 1999 | British | 67 years |
| Per-anders Hjort | Director | 1 Apr 2003 | 1 Oct 2008 | Swedish | 68 years |
| Peter George Wilson | Director | 30 Sept 1993 | 28 Nov 1993 | British | 81 years |
| Raymond Hawthorne | Director | 12 May 1994 | 31 Mar 1996 | British | 77 years |
| Robert Anthony Searby | Director | 19 May 1999 | 2 Mar 2001 | British | 70 years |
| Simon John Thorne | Director | 19 May 1999 | 30 Jun 2001 | British | 59 years |
| Simon John Thorne | Secretary | 8 Mar 1999 | 30 Jun 2001 | British | - |